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Title: Relation between nonlocality and contextuality for a biphoton
Authors: Soeda, A.
Kurzyński, P. 
Ramanathan, R. 
Modi, K. 
Kaszlikowski, D. 
Issue Date: 25-Feb-2013
Citation: Soeda, A., Kurzyński, P., Ramanathan, R., Modi, K., Kaszlikowski, D. (2013-02-25). Relation between nonlocality and contextuality for a biphoton. Physical Review A - Atomic, Molecular, and Optical Physics 87 (2) : -. ScholarBank@NUS Repository.
Abstract: We investigate the set of qutrit states in terms of symmetric states of two qubits that violate the minimal contextual inequality, namely the Klyachko-Can-Binicoglu-Shumovsky (KCBS) inequality. The physical system that provides a natural framework for this problem is a biphoton, which consists of two photons in the same spatiotemporal mode and whose effective polarization behaves as a three-level quantum system. The relationship between the KCBS contextual inequality and the Clauser-Horne-Shimony-Holt (CHSH) inequality is investigated. We find that every biphotonic state that is contextual with respect to KCBS is nonlocal as per the CHSH test when the two photons are apart, but the converse is not true. © 2013 American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
ISSN: 10502947
DOI: 10.1103/PhysRevA.87.022120
Appears in Collections:Staff Publications

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